GMS36 Datasheet, PDF (98/109 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 9. EPROM
2) EPROM Read Mode (1Byte)
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$+  +LJK ELW $GGUHVV ,QSXW /DWFK
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0+  +LJK ELW 0 RGH , QSXW /DWFK
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#. Note :
1. Internal system is reset at VPP = 12.5V and K2=`Low`
2. The reset release (K2=`High`) must be set within OSC1 = `Low` state.
(From this time, OSC1 clock is counted.)
3. The Data will be inputted from the 19th rising edge of OSC1.
4. For device verify. If you set Lock bit, output data is always `0F`h.
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